42707758 has 4 divisors (see below), whose sum is σ = 64061640. Its totient is φ = 21353878.

The previous prime is 42707737. The next prime is 42707759. The reversal of 42707758 is 85770724.

It is a semiprime because it is the product of two primes.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a self number, because there is not a number n which added to its sum of digits gives 42707758.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42707759) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10676938 + ... + 10676941.

It is an arithmetic number, because the mean of its divisors is an integer number (16015410).

Almost surely, 2^42707758 is an apocalyptic number.

42707758 is a deficient number, since it is larger than the sum of its proper divisors (21353882).

42707758 is a wasteful number, since it uses less digits than its factorization.

42707758 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21353881.

The product of its (nonzero) digits is 109760, while the sum is 40.

The square root of 42707758 is about 6535.1172904547. The cubic root of 42707758 is about 349.5443267336.

The spelling of 42707758 in words is "forty-two million, seven hundred seven thousand, seven hundred fifty-eight".